2 Unix SMB/CIFS implementation.
6 Copyright (C) Andrew Tridgell 2004
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 this implements most of the POSIX NTVFS backend
24 This is the default backend
28 #include "vfs_posix.h"
29 #include "librpc/gen_ndr/security.h"
30 #include "lib/tdb/include/tdb.h"
32 #include "libcli/security/security.h"
33 #include "lib/events/events.h"
37 setup config options for a posix share
39 static void pvfs_setup_options(struct pvfs_state *pvfs)
41 int snum = pvfs->ntvfs->ctx->config.snum;
44 if (lp_map_hidden(snum)) pvfs->flags |= PVFS_FLAG_MAP_HIDDEN;
45 if (lp_map_archive(snum)) pvfs->flags |= PVFS_FLAG_MAP_ARCHIVE;
46 if (lp_map_system(snum)) pvfs->flags |= PVFS_FLAG_MAP_SYSTEM;
47 if (lp_readonly(snum)) pvfs->flags |= PVFS_FLAG_READONLY;
48 if (lp_strict_sync(snum)) pvfs->flags |= PVFS_FLAG_STRICT_SYNC;
49 if (lp_strict_locking(snum)) pvfs->flags |= PVFS_FLAG_STRICT_LOCKING;
50 if (lp_ci_filesystem(snum)) pvfs->flags |= PVFS_FLAG_CI_FILESYSTEM;
52 if (lp_parm_bool(snum, "posix", "fakeoplocks", False)) {
53 pvfs->flags |= PVFS_FLAG_FAKE_OPLOCKS;
56 /* this must be a power of 2 */
57 pvfs->alloc_size_rounding = lp_parm_int(snum,
58 "posix", "allocationrounding", 512);
60 pvfs->search.inactivity_time = lp_parm_int(snum,
61 "posix", "searchinactivity", 300);
63 #if HAVE_XATTR_SUPPORT
64 if (lp_parm_bool(snum, "posix", "xattr", True)) pvfs->flags |= PVFS_FLAG_XATTR_ENABLE;
67 pvfs->sharing_violation_delay = lp_parm_int(snum, "posix", "sharedelay", 1000000);
69 pvfs->share_name = talloc_strdup(pvfs, lp_servicename(snum));
72 FS_ATTR_CASE_SENSITIVE_SEARCH |
73 FS_ATTR_CASE_PRESERVED_NAMES |
74 FS_ATTR_UNICODE_ON_DISK |
77 /* allow xattrs to be stored in a external tdb */
78 eadb = lp_parm_string(snum, "posix", "eadb");
80 pvfs->ea_db = tdb_wrap_open(pvfs, eadb, 50000,
81 TDB_DEFAULT, O_RDWR|O_CREAT, 0600);
82 if (pvfs->ea_db != NULL) {
83 pvfs->flags |= PVFS_FLAG_XATTR_ENABLE;
85 DEBUG(0,("Failed to open eadb '%s' - %s\n",
86 eadb, strerror(errno)));
87 pvfs->flags &= ~PVFS_FLAG_XATTR_ENABLE;
91 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
92 pvfs->fs_attribs |= FS_ATTR_NAMED_STREAMS;
94 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
95 pvfs->fs_attribs |= FS_ATTR_PERSISTANT_ACLS;
98 pvfs->sid_cache.creator_owner = dom_sid_parse_talloc(pvfs, SID_CREATOR_OWNER);
99 pvfs->sid_cache.creator_group = dom_sid_parse_talloc(pvfs, SID_CREATOR_GROUP);
101 /* check if the system really supports xattrs */
102 if (pvfs->flags & PVFS_FLAG_XATTR_ENABLE) {
103 pvfs_xattr_probe(pvfs);
107 static int pvfs_state_destructor(void *ptr)
109 struct pvfs_state *pvfs = talloc_get_type(ptr, struct pvfs_state);
110 struct pvfs_file *f, *fn;
111 struct pvfs_search_state *s, *sn;
114 * make sure we cleanup files and searches before anything else
115 * because there destructors need to acess the pvfs_state struct
117 for (f=pvfs->files.list; f; f=fn) {
122 for (s=pvfs->search.list; s; s=sn) {
131 connect to a share - used when a tree_connect operation comes
132 in. For a disk based backend we needs to ensure that the base
133 directory exists (tho it doesn't need to be accessible by the user,
136 static NTSTATUS pvfs_connect(struct ntvfs_module_context *ntvfs,
137 struct ntvfs_request *req, const char *sharename)
139 struct pvfs_state *pvfs;
141 char *base_directory;
144 pvfs = talloc_zero(ntvfs, struct pvfs_state);
145 NT_STATUS_HAVE_NO_MEMORY(pvfs);
147 /* for simplicity of path construction, remove any trailing slash now */
148 base_directory = talloc_strdup(pvfs, lp_pathname(ntvfs->ctx->config.snum));
149 NT_STATUS_HAVE_NO_MEMORY(base_directory);
150 if (strcmp(base_directory, "/") != 0) {
151 trim_string(base_directory, NULL, "/");
155 pvfs->base_directory = base_directory;
157 /* the directory must exist. Note that we deliberately don't
158 check that it is readable */
159 if (stat(pvfs->base_directory, &st) != 0 || !S_ISDIR(st.st_mode)) {
160 DEBUG(0,("pvfs_connect: '%s' is not a directory, when connecting to [%s]\n",
161 pvfs->base_directory, sharename));
162 return NT_STATUS_BAD_NETWORK_NAME;
165 ntvfs->ctx->fs_type = talloc_strdup(ntvfs->ctx, "NTFS");
166 NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->fs_type);
168 ntvfs->ctx->dev_type = talloc_strdup(ntvfs->ctx, "A:");
169 NT_STATUS_HAVE_NO_MEMORY(ntvfs->ctx->dev_type);
171 ntvfs->private_data = pvfs;
173 pvfs->brl_context = brl_init(pvfs,
174 pvfs->ntvfs->ctx->server_id,
175 pvfs->ntvfs->ctx->msg_ctx);
176 if (pvfs->brl_context == NULL) {
177 return NT_STATUS_INTERNAL_DB_CORRUPTION;
180 pvfs->odb_context = odb_init(pvfs, pvfs->ntvfs->ctx);
181 if (pvfs->odb_context == NULL) {
182 return NT_STATUS_INTERNAL_DB_CORRUPTION;
185 /* allow this to be NULL - we just disable change notify */
186 pvfs->notify_context = notify_init(pvfs,
187 pvfs->ntvfs->ctx->server_id,
188 pvfs->ntvfs->ctx->msg_ctx,
189 event_context_find(pvfs),
190 pvfs->ntvfs->ctx->config.snum);
192 pvfs->sidmap = sidmap_open(pvfs);
193 if (pvfs->sidmap == NULL) {
194 return NT_STATUS_INTERNAL_DB_CORRUPTION;
197 /* allocate the fnum id -> ptr tree */
198 pvfs->files.idtree = idr_init(pvfs);
199 NT_STATUS_HAVE_NO_MEMORY(pvfs->files.idtree);
201 /* allocate the search handle -> ptr tree */
202 pvfs->search.idtree = idr_init(pvfs);
203 NT_STATUS_HAVE_NO_MEMORY(pvfs->search.idtree);
205 status = pvfs_mangle_init(pvfs);
206 NT_STATUS_NOT_OK_RETURN(status);
208 pvfs_setup_options(pvfs);
210 talloc_set_destructor(pvfs, pvfs_state_destructor);
213 /* who had the stupid idea to generate a signal on a large
214 file write instead of just failing it!? */
215 BlockSignals(True, SIGXFSZ);
222 disconnect from a share
224 static NTSTATUS pvfs_disconnect(struct ntvfs_module_context *ntvfs)
230 check if a directory exists
232 static NTSTATUS pvfs_chkpath(struct ntvfs_module_context *ntvfs,
233 struct ntvfs_request *req,
234 union smb_chkpath *cp)
236 struct pvfs_state *pvfs = ntvfs->private_data;
237 struct pvfs_filename *name;
240 /* resolve the cifs name to a posix name */
241 status = pvfs_resolve_name(pvfs, req, cp->chkpath.in.path, 0, &name);
242 NT_STATUS_NOT_OK_RETURN(status);
245 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
248 if (!S_ISDIR(name->st.st_mode)) {
249 return NT_STATUS_NOT_A_DIRECTORY;
258 static NTSTATUS pvfs_copy(struct ntvfs_module_context *ntvfs,
259 struct ntvfs_request *req, struct smb_copy *cp)
261 DEBUG(0,("pvfs_copy not implemented\n"));
262 return NT_STATUS_NOT_SUPPORTED;
266 return print queue info
268 static NTSTATUS pvfs_lpq(struct ntvfs_module_context *ntvfs,
269 struct ntvfs_request *req, union smb_lpq *lpq)
271 return NT_STATUS_NOT_SUPPORTED;
274 /* SMBtrans - not used on file shares */
275 static NTSTATUS pvfs_trans(struct ntvfs_module_context *ntvfs,
276 struct ntvfs_request *req, struct smb_trans2 *trans2)
278 return NT_STATUS_ACCESS_DENIED;
282 initialialise the POSIX disk backend, registering ourselves with the ntvfs subsystem
284 NTSTATUS ntvfs_posix_init(void)
287 struct ntvfs_ops ops;
288 NTVFS_CURRENT_CRITICAL_SIZES(vers);
292 ops.type = NTVFS_DISK;
294 /* fill in all the operations */
295 ops.connect = pvfs_connect;
296 ops.disconnect = pvfs_disconnect;
297 ops.unlink = pvfs_unlink;
298 ops.chkpath = pvfs_chkpath;
299 ops.qpathinfo = pvfs_qpathinfo;
300 ops.setpathinfo = pvfs_setpathinfo;
301 ops.open = pvfs_open;
302 ops.mkdir = pvfs_mkdir;
303 ops.rmdir = pvfs_rmdir;
304 ops.rename = pvfs_rename;
305 ops.copy = pvfs_copy;
306 ops.ioctl = pvfs_ioctl;
307 ops.read = pvfs_read;
308 ops.write = pvfs_write;
309 ops.seek = pvfs_seek;
310 ops.flush = pvfs_flush;
311 ops.close = pvfs_close;
312 ops.exit = pvfs_exit;
313 ops.lock = pvfs_lock;
314 ops.setfileinfo = pvfs_setfileinfo;
315 ops.qfileinfo = pvfs_qfileinfo;
316 ops.fsinfo = pvfs_fsinfo;
318 ops.search_first = pvfs_search_first;
319 ops.search_next = pvfs_search_next;
320 ops.search_close = pvfs_search_close;
321 ops.trans = pvfs_trans;
322 ops.logoff = pvfs_logoff;
323 ops.async_setup = pvfs_async_setup;
324 ops.cancel = pvfs_cancel;
325 ops.notify = pvfs_notify;
327 /* register ourselves with the NTVFS subsystem. We register
328 under the name 'default' as we wish to be the default
329 backend, and also register as 'posix' */
330 ops.name = "default";
331 ret = ntvfs_register(&ops, &vers);
333 if (!NT_STATUS_IS_OK(ret)) {
334 DEBUG(0,("Failed to register POSIX backend as '%s'!\n", ops.name));
338 ret = ntvfs_register(&ops, &vers);
340 if (!NT_STATUS_IS_OK(ret)) {
341 DEBUG(0,("Failed to register POSIX backend as '%s'!\n", ops.name));
344 if (NT_STATUS_IS_OK(ret)) {
345 ret = ntvfs_common_init();